U.S. Silica Holdings, Inc. (NYSE: SLCA) announced that it has priced an underwritten public offering of 9,000,000 shares of U.S. Silica common stock for total gross proceeds of $416,250,000. The underwriters have been granted a 30-day option to purchase up to an additional 1,350,000 shares of common stock.

U.S. Silica intends to use the net proceeds of the offering for general corporate purposes including the potential acquisition of complementary businesses or assets. The offering is expected to close on November 16, 2016, subject to customary closing conditions.

Morgan Stanley & Co. LLC and Barclays Capital Inc. acted as joint book-running managers for the offering. This offering is being made by means of a prospectus supplement and accompanying base prospectus, copies of which may be obtained for free by visiting EDGAR on the Securities and Exchange Commission (SEC) website at www.sec.gov. Alternatively, the prospectus and prospectus supplement may be obtained by sending a request to: Morgan Stanley & Co. LLC, Attention: Prospectus Department, 180 Varick Street, 2nd floor, New York, New York 10014 or Barclays Capital Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, Telephone 888-603-5847, Email: barclaysprospectus@broadridge.com.